java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:16:30,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:16:30,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:16:30,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:16:30,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:16:30,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:16:30,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:16:30,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:16:30,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:16:30,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:16:30,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:16:30,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:16:30,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:16:30,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:16:30,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:16:30,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:16:30,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:16:30,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:16:30,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:16:30,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:16:30,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:16:30,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:16:30,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:16:30,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:16:30,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:16:30,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:16:30,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:16:30,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:16:30,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:16:30,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:16:30,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:16:30,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:16:30,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:16:30,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:16:30,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:16:30,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:16:30,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:16:30,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:16:30,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:16:30,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:16:30,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:16:30,671 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:16:30,713 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:16:30,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:16:30,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:16:30,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:16:30,718 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:16:30,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:16:30,719 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:16:30,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:16:30,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:16:30,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:16:30,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:16:30,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:16:30,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:16:30,720 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:16:30,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:16:30,721 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:16:30,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:16:30,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:16:30,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:16:30,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:16:30,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:16:30,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:30,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:16:30,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:16:30,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:16:30,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:16:30,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:16:30,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:16:30,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:16:31,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:16:31,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:16:31,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:16:31,048 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:16:31,049 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:16:31,049 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2019-10-13 21:16:31,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f61bdaf/d6cfd13107d54e93b5ffe170afb5712b/FLAG23a45396f [2019-10-13 21:16:31,744 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:16:31,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2019-10-13 21:16:31,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f61bdaf/d6cfd13107d54e93b5ffe170afb5712b/FLAG23a45396f [2019-10-13 21:16:31,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f61bdaf/d6cfd13107d54e93b5ffe170afb5712b [2019-10-13 21:16:31,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:16:31,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:16:31,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:31,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:16:31,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:16:31,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:31" (1/1) ... [2019-10-13 21:16:31,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfcfaca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:31, skipping insertion in model container [2019-10-13 21:16:31,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:31" (1/1) ... [2019-10-13 21:16:31,985 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:16:32,067 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:16:32,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:32,825 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:16:32,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:33,073 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:16:33,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:33 WrapperNode [2019-10-13 21:16:33,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:33,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:16:33,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:16:33,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:16:33,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:33" (1/1) ... [2019-10-13 21:16:33,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:33" (1/1) ... [2019-10-13 21:16:33,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:33" (1/1) ... [2019-10-13 21:16:33,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:33" (1/1) ... [2019-10-13 21:16:33,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:33" (1/1) ... [2019-10-13 21:16:33,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:33" (1/1) ... [2019-10-13 21:16:33,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:33" (1/1) ... [2019-10-13 21:16:33,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:16:33,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:16:33,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:16:33,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:16:33,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:33,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:16:33,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:16:33,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:33,349 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:16:33,349 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:16:33,350 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:16:33,351 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:16:33,352 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:16:33,352 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:16:33,353 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:16:33,353 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:16:33,353 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:16:33,353 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:16:33,354 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:16:33,354 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:16:33,355 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:16:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:16:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:16:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:16:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:16:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:16:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:16:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:16:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:16:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:16:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:16:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:16:33,360 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:16:33,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:16:33,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:16:33,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:16:33,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:16:33,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:16:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:16:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:16:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:16:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:16:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:16:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:16:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:16:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:16:33,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:16:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:16:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:16:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:16:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:16:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:16:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:16:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:16:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:16:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:16:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:16:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:16:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:16:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:16:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:16:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:16:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:16:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:16:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:16:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:16:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:16:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:16:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:16:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:16:33,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:16:33,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:16:33,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:16:33,368 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:16:33,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:16:33,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:16:33,369 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:16:33,369 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:16:33,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:16:33,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:16:33,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:16:33,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:16:33,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:16:33,371 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:16:33,371 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-13 21:16:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:16:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:16:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:16:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:16:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:16:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:16:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:16:33,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:16:33,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:33,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:16:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:16:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:16:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:16:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:16:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:16:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:16:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:16:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:16:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:16:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:16:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:16:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:16:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:16:33,377 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:16:33,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:33,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:33,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:33,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:33,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:16:33,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:16:33,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:16:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:16:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:16:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:16:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:16:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:16:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:16:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:16:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:16:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:16:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:16:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:16:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:16:33,382 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:16:33,382 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:16:33,382 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:16:33,382 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:16:33,382 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:16:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:16:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:16:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:16:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:16:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:16:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:16:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:16:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:16:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:16:33,388 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:16:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:16:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:16:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:16:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:16:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:16:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:16:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:16:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:16:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:16:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:16:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:16:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:16:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:16:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:16:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:16:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:16:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:16:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:16:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:16:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:16:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:16:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:16:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:16:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:16:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:16:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:16:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:16:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:16:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:16:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:16:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:16:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:16:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:16:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:16:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:16:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:16:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:16:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:16:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:16:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:16:33,402 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:16:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:16:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:16:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:16:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:16:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:16:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:16:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:16:33,403 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:16:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:16:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:16:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:16:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:16:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:16:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:16:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:16:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:16:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:16:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:16:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:16:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:16:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:16:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:16:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:16:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:16:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:16:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-13 21:16:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:16:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:16:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:16:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:16:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:16:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:16:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:16:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:16:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:16:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:16:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:16:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:16:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:16:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:16:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:16:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:16:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:16:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:16:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:16:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:16:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:16:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:16:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:16:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:16:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:16:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:35,512 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:35,512 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:35,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:35 BoogieIcfgContainer [2019-10-13 21:16:35,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:35,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:35,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:35,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:35,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:16:31" (1/3) ... [2019-10-13 21:16:35,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b25bf92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:35, skipping insertion in model container [2019-10-13 21:16:35,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:33" (2/3) ... [2019-10-13 21:16:35,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b25bf92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:35, skipping insertion in model container [2019-10-13 21:16:35,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:35" (3/3) ... [2019-10-13 21:16:35,524 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product28.cil.c [2019-10-13 21:16:35,536 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:35,548 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:35,561 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:35,594 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:35,594 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:35,594 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:35,595 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:35,595 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:35,595 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:35,595 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:35,595 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states. [2019-10-13 21:16:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 21:16:35,650 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:35,651 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:35,654 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:35,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:35,661 INFO L82 PathProgramCache]: Analyzing trace with hash -153424119, now seen corresponding path program 1 times [2019-10-13 21:16:35,673 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:35,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690480633] [2019-10-13 21:16:35,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:35,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:35,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:36,438 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690480633] [2019-10-13 21:16:36,439 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:36,440 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:36,440 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941964792] [2019-10-13 21:16:36,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:36,448 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:36,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:36,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:36,468 INFO L87 Difference]: Start difference. First operand 509 states. Second operand 2 states. [2019-10-13 21:16:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:36,582 INFO L93 Difference]: Finished difference Result 715 states and 948 transitions. [2019-10-13 21:16:36,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:36,583 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-10-13 21:16:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:36,619 INFO L225 Difference]: With dead ends: 715 [2019-10-13 21:16:36,619 INFO L226 Difference]: Without dead ends: 458 [2019-10-13 21:16:36,629 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:36,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2019-10-13 21:16:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2019-10-13 21:16:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2019-10-13 21:16:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 611 transitions. [2019-10-13 21:16:36,722 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 611 transitions. Word has length 164 [2019-10-13 21:16:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:36,724 INFO L462 AbstractCegarLoop]: Abstraction has 458 states and 611 transitions. [2019-10-13 21:16:36,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:36,724 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 611 transitions. [2019-10-13 21:16:36,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:16:36,730 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:36,730 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:36,730 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:36,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:36,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1934400744, now seen corresponding path program 1 times [2019-10-13 21:16:36,731 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:36,731 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217170055] [2019-10-13 21:16:36,732 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:36,732 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:36,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:36,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217170055] [2019-10-13 21:16:36,970 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:36,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:36,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686495297] [2019-10-13 21:16:36,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:36,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:36,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:36,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:36,973 INFO L87 Difference]: Start difference. First operand 458 states and 611 transitions. Second operand 3 states. [2019-10-13 21:16:37,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:37,042 INFO L93 Difference]: Finished difference Result 698 states and 916 transitions. [2019-10-13 21:16:37,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:37,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-10-13 21:16:37,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:37,049 INFO L225 Difference]: With dead ends: 698 [2019-10-13 21:16:37,049 INFO L226 Difference]: Without dead ends: 461 [2019-10-13 21:16:37,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:37,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2019-10-13 21:16:37,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 460. [2019-10-13 21:16:37,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2019-10-13 21:16:37,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 613 transitions. [2019-10-13 21:16:37,107 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 613 transitions. Word has length 165 [2019-10-13 21:16:37,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:37,108 INFO L462 AbstractCegarLoop]: Abstraction has 460 states and 613 transitions. [2019-10-13 21:16:37,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 613 transitions. [2019-10-13 21:16:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:16:37,115 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:37,116 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:37,116 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:37,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:37,116 INFO L82 PathProgramCache]: Analyzing trace with hash -812491460, now seen corresponding path program 1 times [2019-10-13 21:16:37,117 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:37,117 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111492948] [2019-10-13 21:16:37,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:37,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111492948] [2019-10-13 21:16:37,336 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:37,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:37,337 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804507269] [2019-10-13 21:16:37,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:37,340 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:37,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:37,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:37,341 INFO L87 Difference]: Start difference. First operand 460 states and 613 transitions. Second operand 3 states. [2019-10-13 21:16:37,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:37,373 INFO L93 Difference]: Finished difference Result 894 states and 1221 transitions. [2019-10-13 21:16:37,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:37,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:16:37,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:37,378 INFO L225 Difference]: With dead ends: 894 [2019-10-13 21:16:37,379 INFO L226 Difference]: Without dead ends: 499 [2019-10-13 21:16:37,380 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-10-13 21:16:37,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 498. [2019-10-13 21:16:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2019-10-13 21:16:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 679 transitions. [2019-10-13 21:16:37,403 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 679 transitions. Word has length 171 [2019-10-13 21:16:37,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:37,403 INFO L462 AbstractCegarLoop]: Abstraction has 498 states and 679 transitions. [2019-10-13 21:16:37,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:37,404 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 679 transitions. [2019-10-13 21:16:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 21:16:37,407 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:37,408 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:37,408 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:37,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:37,408 INFO L82 PathProgramCache]: Analyzing trace with hash -522530241, now seen corresponding path program 1 times [2019-10-13 21:16:37,409 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:37,409 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207888999] [2019-10-13 21:16:37,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:37,701 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:37,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207888999] [2019-10-13 21:16:37,702 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:37,702 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:16:37,702 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728646259] [2019-10-13 21:16:37,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:37,703 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:37,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:37,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:16:37,704 INFO L87 Difference]: Start difference. First operand 498 states and 679 transitions. Second operand 7 states. [2019-10-13 21:16:40,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:40,461 INFO L93 Difference]: Finished difference Result 954 states and 1267 transitions. [2019-10-13 21:16:40,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:40,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2019-10-13 21:16:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:40,466 INFO L225 Difference]: With dead ends: 954 [2019-10-13 21:16:40,467 INFO L226 Difference]: Without dead ends: 733 [2019-10-13 21:16:40,468 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:40,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2019-10-13 21:16:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 724. [2019-10-13 21:16:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2019-10-13 21:16:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 971 transitions. [2019-10-13 21:16:40,519 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 971 transitions. Word has length 172 [2019-10-13 21:16:40,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:40,520 INFO L462 AbstractCegarLoop]: Abstraction has 724 states and 971 transitions. [2019-10-13 21:16:40,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:40,520 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 971 transitions. [2019-10-13 21:16:40,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 21:16:40,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:40,524 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:40,525 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:40,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:40,525 INFO L82 PathProgramCache]: Analyzing trace with hash -853963851, now seen corresponding path program 1 times [2019-10-13 21:16:40,525 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:40,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329658452] [2019-10-13 21:16:40,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:40,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:40,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:40,849 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329658452] [2019-10-13 21:16:40,849 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:40,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-13 21:16:40,849 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455749318] [2019-10-13 21:16:40,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:16:40,850 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:40,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:16:40,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:40,851 INFO L87 Difference]: Start difference. First operand 724 states and 971 transitions. Second operand 18 states. [2019-10-13 21:16:41,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:41,340 INFO L93 Difference]: Finished difference Result 1249 states and 1659 transitions. [2019-10-13 21:16:41,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:16:41,340 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 173 [2019-10-13 21:16:41,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:41,346 INFO L225 Difference]: With dead ends: 1249 [2019-10-13 21:16:41,346 INFO L226 Difference]: Without dead ends: 774 [2019-10-13 21:16:41,348 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-10-13 21:16:41,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 770. [2019-10-13 21:16:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2019-10-13 21:16:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1034 transitions. [2019-10-13 21:16:41,391 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1034 transitions. Word has length 173 [2019-10-13 21:16:41,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:41,392 INFO L462 AbstractCegarLoop]: Abstraction has 770 states and 1034 transitions. [2019-10-13 21:16:41,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:16:41,392 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1034 transitions. [2019-10-13 21:16:41,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-13 21:16:41,396 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:41,396 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:41,397 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:41,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:41,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1446160850, now seen corresponding path program 1 times [2019-10-13 21:16:41,397 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:41,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631862529] [2019-10-13 21:16:41,398 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,398 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:41,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631862529] [2019-10-13 21:16:41,596 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:41,596 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:16:41,597 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965502205] [2019-10-13 21:16:41,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:16:41,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:41,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:16:41,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:16:41,598 INFO L87 Difference]: Start difference. First operand 770 states and 1034 transitions. Second operand 8 states. [2019-10-13 21:16:42,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:42,477 INFO L93 Difference]: Finished difference Result 1455 states and 1940 transitions. [2019-10-13 21:16:42,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:42,478 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2019-10-13 21:16:42,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:42,488 INFO L225 Difference]: With dead ends: 1455 [2019-10-13 21:16:42,488 INFO L226 Difference]: Without dead ends: 1296 [2019-10-13 21:16:42,489 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2019-10-13 21:16:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1283. [2019-10-13 21:16:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2019-10-13 21:16:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1714 transitions. [2019-10-13 21:16:42,559 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1714 transitions. Word has length 182 [2019-10-13 21:16:42,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:42,560 INFO L462 AbstractCegarLoop]: Abstraction has 1283 states and 1714 transitions. [2019-10-13 21:16:42,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:16:42,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1714 transitions. [2019-10-13 21:16:42,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 21:16:42,565 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:42,566 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:42,566 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:42,567 INFO L82 PathProgramCache]: Analyzing trace with hash 108551509, now seen corresponding path program 1 times [2019-10-13 21:16:42,567 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:42,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871457150] [2019-10-13 21:16:42,567 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:43,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871457150] [2019-10-13 21:16:43,074 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:43,074 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-13 21:16:43,075 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253798677] [2019-10-13 21:16:43,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 21:16:43,076 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:43,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 21:16:43,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:16:43,077 INFO L87 Difference]: Start difference. First operand 1283 states and 1714 transitions. Second operand 17 states. [2019-10-13 21:16:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:44,073 INFO L93 Difference]: Finished difference Result 1748 states and 2313 transitions. [2019-10-13 21:16:44,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 21:16:44,074 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 183 [2019-10-13 21:16:44,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:44,086 INFO L225 Difference]: With dead ends: 1748 [2019-10-13 21:16:44,086 INFO L226 Difference]: Without dead ends: 1282 [2019-10-13 21:16:44,091 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:44,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2019-10-13 21:16:44,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1281. [2019-10-13 21:16:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2019-10-13 21:16:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1709 transitions. [2019-10-13 21:16:44,206 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1709 transitions. Word has length 183 [2019-10-13 21:16:44,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:44,209 INFO L462 AbstractCegarLoop]: Abstraction has 1281 states and 1709 transitions. [2019-10-13 21:16:44,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 21:16:44,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1709 transitions. [2019-10-13 21:16:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 21:16:44,216 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:44,217 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:44,217 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:44,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:44,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1143426979, now seen corresponding path program 2 times [2019-10-13 21:16:44,219 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:44,219 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29043854] [2019-10-13 21:16:44,220 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:44,220 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:44,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:44,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29043854] [2019-10-13 21:16:44,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568832884] [2019-10-13 21:16:44,560 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:45,000 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:45,000 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:45,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 21:16:45,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:45,224 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:45,794 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:45,794 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-13 21:16:45,794 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948073972] [2019-10-13 21:16:45,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:45,796 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:45,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:45,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:45,796 INFO L87 Difference]: Start difference. First operand 1281 states and 1709 transitions. Second operand 14 states. [2019-10-13 21:16:47,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:47,931 INFO L93 Difference]: Finished difference Result 3795 states and 5102 transitions. [2019-10-13 21:16:47,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:47,931 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2019-10-13 21:16:47,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:47,956 INFO L225 Difference]: With dead ends: 3795 [2019-10-13 21:16:47,957 INFO L226 Difference]: Without dead ends: 3788 [2019-10-13 21:16:47,961 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 360 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:16:47,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2019-10-13 21:16:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 2754. [2019-10-13 21:16:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2754 states. [2019-10-13 21:16:48,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 3749 transitions. [2019-10-13 21:16:48,162 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 3749 transitions. Word has length 183 [2019-10-13 21:16:48,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:48,163 INFO L462 AbstractCegarLoop]: Abstraction has 2754 states and 3749 transitions. [2019-10-13 21:16:48,163 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:48,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 3749 transitions. [2019-10-13 21:16:48,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 21:16:48,172 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:48,172 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:48,378 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:48,379 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:48,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1280740859, now seen corresponding path program 1 times [2019-10-13 21:16:48,379 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:48,380 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775431089] [2019-10-13 21:16:48,380 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:48,380 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:48,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:48,556 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775431089] [2019-10-13 21:16:48,556 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166467499] [2019-10-13 21:16:48,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:49,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:49,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:49,419 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:49,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:49,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:49,923 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:49,923 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:16:49,923 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010978431] [2019-10-13 21:16:49,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:49,925 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:49,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:49,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:49,926 INFO L87 Difference]: Start difference. First operand 2754 states and 3749 transitions. Second operand 7 states. [2019-10-13 21:16:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:51,307 INFO L93 Difference]: Finished difference Result 5481 states and 7469 transitions. [2019-10-13 21:16:51,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:51,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2019-10-13 21:16:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:51,324 INFO L225 Difference]: With dead ends: 5481 [2019-10-13 21:16:51,325 INFO L226 Difference]: Without dead ends: 2766 [2019-10-13 21:16:51,334 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 361 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:51,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2019-10-13 21:16:51,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2756. [2019-10-13 21:16:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2756 states. [2019-10-13 21:16:51,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 3752 transitions. [2019-10-13 21:16:51,469 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 3752 transitions. Word has length 186 [2019-10-13 21:16:51,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:51,470 INFO L462 AbstractCegarLoop]: Abstraction has 2756 states and 3752 transitions. [2019-10-13 21:16:51,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 3752 transitions. [2019-10-13 21:16:51,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 21:16:51,477 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:51,478 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:51,690 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:51,691 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:51,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:51,691 INFO L82 PathProgramCache]: Analyzing trace with hash 838404946, now seen corresponding path program 1 times [2019-10-13 21:16:51,691 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:51,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863106041] [2019-10-13 21:16:51,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:51,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863106041] [2019-10-13 21:16:51,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762275084] [2019-10-13 21:16:51,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:52,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:52,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:16:52,716 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:53,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:53,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:53,200 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:53,304 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:53,304 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:16:53,304 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913862617] [2019-10-13 21:16:53,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:53,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:53,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:53,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:16:53,307 INFO L87 Difference]: Start difference. First operand 2756 states and 3752 transitions. Second operand 9 states. [2019-10-13 21:16:54,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:54,647 INFO L93 Difference]: Finished difference Result 5488 states and 7479 transitions. [2019-10-13 21:16:54,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:54,648 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-10-13 21:16:54,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:54,664 INFO L225 Difference]: With dead ends: 5488 [2019-10-13 21:16:54,665 INFO L226 Difference]: Without dead ends: 2774 [2019-10-13 21:16:54,675 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2019-10-13 21:16:54,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2772. [2019-10-13 21:16:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2772 states. [2019-10-13 21:16:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 3768 transitions. [2019-10-13 21:16:54,839 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 3768 transitions. Word has length 187 [2019-10-13 21:16:54,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:54,840 INFO L462 AbstractCegarLoop]: Abstraction has 2772 states and 3768 transitions. [2019-10-13 21:16:54,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:54,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 3768 transitions. [2019-10-13 21:16:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-13 21:16:54,849 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:54,849 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:55,059 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:55,060 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:55,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1120969949, now seen corresponding path program 1 times [2019-10-13 21:16:55,060 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:55,060 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406353307] [2019-10-13 21:16:55,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:55,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:55,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:55,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406353307] [2019-10-13 21:16:55,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027578084] [2019-10-13 21:16:55,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:55,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:55,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:55,814 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:56,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:56,279 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:56,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:56,454 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:56,454 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:16:56,454 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722317062] [2019-10-13 21:16:56,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:56,455 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:56,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:56,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:16:56,456 INFO L87 Difference]: Start difference. First operand 2772 states and 3768 transitions. Second operand 16 states. [2019-10-13 21:16:57,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:57,823 INFO L93 Difference]: Finished difference Result 5480 states and 7460 transitions. [2019-10-13 21:16:57,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:57,823 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 188 [2019-10-13 21:16:57,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:57,841 INFO L225 Difference]: With dead ends: 5480 [2019-10-13 21:16:57,841 INFO L226 Difference]: Without dead ends: 2796 [2019-10-13 21:16:57,851 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 360 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:57,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2019-10-13 21:16:57,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2794. [2019-10-13 21:16:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2794 states. [2019-10-13 21:16:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 3793 transitions. [2019-10-13 21:16:57,995 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 3793 transitions. Word has length 188 [2019-10-13 21:16:57,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:57,995 INFO L462 AbstractCegarLoop]: Abstraction has 2794 states and 3793 transitions. [2019-10-13 21:16:57,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:57,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 3793 transitions. [2019-10-13 21:16:58,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 21:16:58,006 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:58,006 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:58,213 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:58,214 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:58,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:58,214 INFO L82 PathProgramCache]: Analyzing trace with hash -732746358, now seen corresponding path program 2 times [2019-10-13 21:16:58,215 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:58,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343810477] [2019-10-13 21:16:58,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:58,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:58,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:58,359 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:16:58,360 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343810477] [2019-10-13 21:16:58,360 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769469033] [2019-10-13 21:16:58,360 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:58,992 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:16:58,992 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:58,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 2415 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:59,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:59,116 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:59,360 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:59,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:16:59,482 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:59,482 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-13 21:16:59,482 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477069641] [2019-10-13 21:16:59,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:16:59,483 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:59,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:16:59,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:59,484 INFO L87 Difference]: Start difference. First operand 2794 states and 3793 transitions. Second operand 11 states. [2019-10-13 21:17:00,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:00,960 INFO L93 Difference]: Finished difference Result 5265 states and 7119 transitions. [2019-10-13 21:17:00,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:17:00,961 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 189 [2019-10-13 21:17:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:00,975 INFO L225 Difference]: With dead ends: 5265 [2019-10-13 21:17:00,975 INFO L226 Difference]: Without dead ends: 2595 [2019-10-13 21:17:00,984 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 368 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:17:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2019-10-13 21:17:01,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2587. [2019-10-13 21:17:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2019-10-13 21:17:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3462 transitions. [2019-10-13 21:17:01,189 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3462 transitions. Word has length 189 [2019-10-13 21:17:01,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:01,190 INFO L462 AbstractCegarLoop]: Abstraction has 2587 states and 3462 transitions. [2019-10-13 21:17:01,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:17:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3462 transitions. [2019-10-13 21:17:01,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 21:17:01,197 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:01,197 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:01,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:01,406 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:01,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1049435763, now seen corresponding path program 1 times [2019-10-13 21:17:01,406 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:01,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410417698] [2019-10-13 21:17:01,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:01,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:01,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:17:01,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410417698] [2019-10-13 21:17:01,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92182169] [2019-10-13 21:17:01,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:02,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:17:02,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:17:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:17:02,282 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:17:02,573 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:17:02,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:02,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:17:02,797 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:17:02,797 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 20 [2019-10-13 21:17:02,797 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503807209] [2019-10-13 21:17:02,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:17:02,799 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:02,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:17:02,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:17:02,799 INFO L87 Difference]: Start difference. First operand 2587 states and 3462 transitions. Second operand 15 states.